Converters

Inches to CM Converter

Enter a length in inches to get it in centimetres. The factor is exactly 2.54, agreed internationally in 1959, so the conversion is precise in both directions.

Inch (in)

centimetres

2.54 cm

1 in converted · 1 in = 2.54 cm

Convert centimetres to inches

Common inches to centimetres values

Reference table converting common inches values to centimetres
in	cm
1	2.54
2	5.08
5	12.7
10	25.4
15	38.1
20	50.8
30	76.2
50	127
100	254

How to use this tool

Enter the length in inches. For feet and inches, multiply the feet by 12 and add the inches first.
Read the result in centimetres.

Formula and method

centimetres = inches × 2.54

Worked examples

5 feet 10 inches in centimetres

(5 × 12) + 10 = 70 inches
70 × 2.54 = 177.8

177.8 cm.

A 32 inch waist

32 × 2.54 = 81.28

81.28 cm.

Notes and limitations

For feet and inches, convert the feet to inches first — a foot is 12 inches.
The factor is exact, so repeated conversion introduces no drift.

Frequently asked questions

How many cm is 1 inch?

Exactly 2.54 cm.

How do I convert feet and inches to cm?

Multiply the feet by 12, add the remaining inches, then multiply by 2.54. 6 feet 2 inches is 74 inches, which is 187.96 cm.

How many cm is 12 inches?

30.48 cm — that is one foot.